To assess the content validity, we examined the possibility of detecting the difference between the measured values for different subjects.
The stabilized SOA for both letter-discrimination and image categorization tasks ranged from 70 to 110 ms for different subjects (Table 1), no significant differences were seen between the two types of recognition tasks.
For the SEMG signals of 100 and 200 ms, the standard deviation of classification accuracy was relatively large, which indicated that the difference of classification results was obvious for different subjects when the data length of SEMG signals was short.
However, the curves for different subjects did not intersect, thus showing comparatively constant interindividual differences.
Due to differences in hemodynamic delay between subjects, the response range was different for different subjects.
In addition, there were different numbers of selected features for different subjects in terms of the same data length, which indicated the individual differences of different subjects for the same feature selection algorithm.
But the principle of differential charges for different subjects surely offers the flexibility and freedom that all institutions should welcome.
Diane Ravitch, a historian of the city schools and a critic of the Bloomberg administration, noted that when students receive report cards, there are different grades for different subjects.
"Each institution has got a lot of analysis on predicted grades versus actual outcomes for different subjects, so that they've got a sound understanding of how reliable they are.
On the whole, the probability of getting an A* was relatively equal between the genders (boys were 0.5% more likely to get the top grade) but that gap broadened considerably for different subjects.
"I'd have setting (teaching pupils in different ability groups for different subjects) from the word 'go' (in secondary schools)," he added.
